The average period of gestation for cats (66 days) is what percent more than the average gestation period for hamsters (22 days) ?

200 %

Step-by-step explanation:

Let the gestation period of hamsters 22 days=100%

So the gestation period of cats is 66/22*100=300%

So the gestation period of cats is 300-100=200% more than the gestation period of hamsters